Ключевые слова: blue sky, buildings, city, cityscape, clean, cleaning, clouds, commercial, daytime, downtown, equipment, exterior, facade, glass facade, high altitude, high rise, job, maintenance, manual labor, metropolitan, occupation, outdoors, professional, reflective, rope access, safety gear, safety harness, safety helmet, service, skyscraper, skyscrapers, sunny, tall, tower, urban, window cleaner, windows, work, worker, workwear,